Malonic acid ester adducts of decachlorooctahydro-1, 3, 4-metheno-2h-cyclobuta (cd)pentalen-2-one



3,278,579 MALONIC ACiD ESTER ADDUCTS F DECA- CHLOROOCTAHYDRO-l,3,4-METHENO 2H- CYCLOBUTA (cd)PENTALEN-2-0NE Everett E. Gilbert, Morris Township, Morris County, and Pasquale Lornhardo, East Hanover Township, Morris County, N.J., assignors to Allied Chemical Corporation, New York, N.Y., a corporation of New York No Drawing. Filed Jan. 30, 1963, Ser. No. 255,097 11 Claims. (Cl. 260-468) This ketone may be prepared in known manner by hydrolyzing the reaction product of hexachlorocyclopentadiene and sulfur trioxide.

An object of the present invention is to provide new ketone-malonate adducts exhibiting high pesticidal activity.

Another object of the invention is to provide new pesticidal compositions containing the ketone-malonate adducts as active ingredients.

Still another object of the invention is to provide a method of combatting pests, especially insects, comprising contacting the pests with pesticidal compositions containing the ketone-malonate adducts as active ingredients.

It is a further object of the invention to provide a simple and economical method for preparing the ketonemalonate adducts.

Other objects and advantages of the invention will be apparent from the following description.

The ketone-malonate adducts contemplated by this invent-ion comprise those obtained by reacting the ketone with a malonate ester of the group consisting of dialkyl malonates and diaryl malonates. The reaction may be represented by the following equation:

01001100 CH2(COOR)2 CmCl CII(COOR)2 In the equation, R is an alkyl group, preferably an alkyl group containing 1 to 12 carbon atoms, or an aryl group, preferably phenyl. Any dialkyl or diaryl malonate may be used to react with the ketone. Typical malonates include dimethyl, diethyl, d-ipropyl, di(n-butyl) di(n-hexyl), di(ndodecyl), diphenyl and dinaphthyl malonates.

The ketone-malonate adducts may be prepared in simple and economical manner by reacting the ketone with the desired malonate, in mol ratio of about 0.5 to 2 mols of ketone per mol of malonate, at temperature ranging from room temperature to about 250 C.

3,273,579 Patented Oct. 11, 1966 If the ketone is available in hydrate form, it can be dehydrated before reaction by heating it in an oven at temperature of about to 150 C. or by refluxing it with an aromatic solvent such as xylene to remove the water. The water can also be removed during reaction, as described below.

Although the reactants may be employed in mol ratio of about 0.5 to 2 mols of iketone per mol of malonate, it is preferred to use approximately equimolar proportions of the reactants.

The reaction is carried out at room temperature to about 250 0, usually at temperature of about 100 to 200 C. The reaction temperature is preferably the reflux temperature of the reaction mixture.

If desired, the reaction may be carried out in the presence of an organic solvent. The solvent must be inert to the reactants and the desired ketone-malonate adduct. Among the suitable solvents are aliphatic or aromatic hydrocarbons such as xylene, .toluene, benzene, petroleum ether, methylene chloride, etc. The solvent serves to keep the ketone-malonate adduct in solution. Moreover, if the ketone is employed in hydrate form, the solvent enables dehydration of the ketone during the reaction.

Conventional acid or basic catalysts may be employed to speed up the reaction. It is, however, a feature of this invent-ion that the reaction proceeds readily in the absence of a catalyst.

The ketone-malonate adducts may be recovered from the reaction mixture by procedures known in the art, as by precipitation with a non-solvent, e g. hexane, followed by filtration and drying. The adducts may be purified, for example, by recrystallization from hexane.

The following examples are typical of preparation of the ketone-malonate adducts of this invention. In the examples, parts are by weight.

Example 1 56 parts of ketone hydrate (4 mols water) were refluxed with 215 parts of xylene to eilect dehydration of the hydrate by azeotropic distillation. 16 parts of diethyl malonate were added, and the mixture was refluxed overnight. The mixture was then distilled in vacuo to remove solvent, thereby leaving an oil as residue. The oil was triturated with 66 parts of hexane to produce a sol-id which was filtered 01f and washed with hexane. 32 parts of ke tone-diethyl malonate adduct (50% yield) were obtained.

The product had a melting point of lO6110 C. The infrared spectrum of the product exhibited hydroxyl absorption at 2.92 microns and carbonyl absorption at 5.78, 5.85 microns.

Example 2 of ketone hydrate (4 mols water) were refluxed with 210 parts of xylene to effect dehydration of the hydrate by azeotropic distillation. 13 parts of dimethyl malonate were added to the xylene solution, and the mixture was refluxed at C. for 17 hours. The mixture was then cooled, filtered and distilled in vacuo to remove solvent. A solid resulted which was triturated with hexane, filtered off, washed with hexane and dried to yield 49 parts (78% yield) of ketone-dimethyl malonate adduct.

A portion of the product (10 grams) was purified by dissolving it in hot hexane-methylene chloride mixture, treating the solution with decolorizing charcoal, filtering, evaporating to ml. and allowing the residue to crystallize.

The purified product had a melting point of 153- 154 C. Chlorine analysis of the purified product gave 56.6% (56.9% theory). The infrared spectrum of the product showed hydroxyl absorption at 2.88 microns, carbon-hy- 56 parts drogen absorption at 3.26, 3.33 microns, carbonyl absorption at 5.63, 5.74 microns and carbon-hydrogen absorption at 6.94, 7.07 microns.

Example 3 night. Solvent was then removed by distillation in vacuo to. yield 42 parts of a viscous dark oil comprising ketonedi(n-dodecyl)ma1onate adduct.

The infrared spectrum of the product showed hydroxyl 5 absorption at 2.91 microns and carbonyl absorption at 16 parts of ketone hydrate (4 mols water) were re- 568,678 microns. fiuxed with 181 parts of xylene to effect dehydration of The ketone-malonate adducts of this invention may be the hydrate by azeotropic distillation. 25.6 parts of diapplied to pests, especially insects, as is but are advanphenyl malonate were added to the solution, and the mixtageously incorporated as ingredients in suitable liquid or ture was YefiuXed Overnight- Afier filtering, the mixture solid carriers to provide pesticidal spray or dust composiwas stripped of solvent by distillation in vacuo to produce tions. a solid. The solid was dissolved in methylene chloride- The liquid pesticidal compositions generally contain in hexane mixture. Most of the methylene chloride Was proportions by weight about 10 to 25% of the adduct as distilled off, and the precipitated solid was then removed active ingredient, about 65 to 88% of an aromatic solvent by filtration. 17 parts (76% yield) of ketone-diphenyl and about 2 to 10% of a suitable wetting or emulsifying malonate adduct were obtained. agent, such as diglycol oleate, p-isooctyl phenyl ether of A portion of the product (5 grams) was purified by polyethylene glycol, blends of alkyl aryl polyether alcodissolving it in hot hexane-methylene chloride mixture, hols with alkyl aryl sulfonates and blends of polyoxytreating the solution with decolorizing charcoal, filtering, ethylene sorbitan esters of mixed fatty and resin acids evaporating to a volume of about 100 ml. and allowing 20 with alkyl aryl sulfonates. The resulting concentrate the residue to crystallize (after seeding). After two resolution is diluted or admixed with water to form an crystallizations from benzene-hexane mixtures, the prodaqueous dispersion or emulsion suitable for spray applicauct had a melting point of 164.5165.5 C. The infrared tion containing about 0.001 to 0.1% by weight of active spectrum of the product showed hydroxyl absorption at ingredient. 2.87 microns, carbon-hydrogen absorption at 3.25 mi- Representative aromatic solvents which may be used crons, carbonyl absorption at 5.60, 5.69 microns and aroin preparing the liquid pesticidal compositions include matic absorption at 6.27, 6.68, 6.75 microns. xylene, high aromatic solvents, methylated naphthalenes,

Example 4 heavy aromatic naphtha, etc.

The wettable powder compositions generally contain in 39 parts of ketone hydrate (4 mols water) were refluxed proportions by weight about 25 to 75% of the active inwith 1210 parts of xylene to eflect dehydration of the hygredient, about 20 to 73% of a finely divided solid carrier drate by azeotropic distillation. 15 parts of di(n-butyl) and about 2 to 5% of suitable wetting and dispersing malonate were added to the solution, and the mixture was agents. Typical wetting agents include polyether sulforefluxed overnight. The mixture was then stripped in nates, alkyl aryl sulfonates, etc. Typical dispersing agents vacuo to yield a viscous oil. The oil was dissolved in include ligninsulfonates, naphthalene sulfonic acid-formhexane, and the solution was cooled in Dry Ice-acetone. aldehyde condensates, etc. An oily solid precipitated and was allowed to warm to The wettable powder compositions can readily be preroom temperature. The precipitate Was then filtered and pared by mixing or milling the active ingredient with the washed with hexane to produce 7 parts of solid having a carrier and wetting agent to a typical particle size of from melting point of 6771 C. A solid precipitated in the about 3 to 40 microns. The composition is admixed with filtrate and was filtered off and washed with hexane to water to fiorm an aqueous dispersion suitable for spraying produce 4 parts of solid having a melting point of 6870 containing about 0.001 to 0.1% by weight of active in- C. The resulting filtrate was cooled in Dry Ice-acetone to gredient. precipitate 20 parts of solid having a melting point of 84- Representative solid carriers which may be used in 87 C. The infrared spectrum of the 3 crops showed preparing the wettable powders include magnesium and them to be essentially identical ketone-di(n-butyl)maloaluminum silicates (talc, kaolin clays, attapulgite clays, nate adducts. They exhibited hydroxyl absorption at 2.92 etc.), carbonates (dolomite, chalk, etc.), materials conmicrons and carbonyl absorption at 5.70, 5.78 microns. taining silicic acid (diatomaceous earth), fullers earth,

gypsum, sulfur, etc. Example 5 The dosage of the active ingredient depends on the par- 4115 Parts ketOHe hydrate mols Water) were ticular organisms to be controlled, field conditions, etc., acted with 20 parts of di(n-hexyl)mal0nate by refluxing as known in the art. In any event, suflicient quantity of overnight. Solvent was removed by distillation in vacuo the active ingredient is used to provide the desired toxicity. yield 57 Parts Of ViSCOUS dark Oil mpri ing ketone- Exemplary tests of the ketone-malonate adducts of the di(n-hexyl)malonate adduct. present invention are set forth below:

Percent Kill Active Ingredient Formulation Mexican Bean Southern Beetle Larvae Armyworms Ketone-diethyl malonate adduct 8 pounds 25% wettable powder composition* per 100 gallons water 100 100 Ketone-dimethyl malonate adduct 2 pounds adduct per 100 gallons acetone-water solution (1:1) 100 100 Ketone-diphenyl malonate adduct 8 pounds 25% wettable powder composition" per 100 gallons water. 60 100 Ketono-di(n-butyl)1nalonate adduct-... 8 pounds 25% wettable powder eomposition* per 100 gallons water. 100 100 Ketone-di(n-hexyDmalonate adduet 8 pounds 25% wettable powder composition" per 100 gallons water. 100 100 Ketone-di(u-dodecyDmalonate adduct- 8 pounds 25% wettable powder composition* per 100 gallons water... 80 100 *25.0% active ingredient, 73.5% Attaclay agent), 0.75% Naeeonol SW (alkyl aryl sulfonate wetting agent).

The infrared spectrum of the product showed hydroxyl (attapulgite clay carrier), 0.75% Elvanol" 51-05 (water-soluble synthetic polyvinyl alcohol dispersing The tests on toxicity to Mexican bean beetle larvae absorption at 2.90 microns and carbonyl absorption at (Epilachna varivestllr) were carried out by spraying hor- 5.68, 5.78 microns.

Example 6 ticultural (cranberry) bean plants with the indicated formulation and allowing the plants to dry. The larvae were confined to the treated foliage by means of wire cages. Record of kill was made 3 days after treatment.

The tests on Southern armyworms (Prodem'a erz'aania) wherein R is an alkyl or aryl group.

2. Ketone-malonate adducts of claim 1 wherein R is an alkyl group containing from 1 to 12 carbon atoms.

3. Ketone-malonate adducts of claim 1 wherein R is an aryl group.

4. A ketone-malonate adduct of claim 1 wherein R is ethyl.

5. A ketone-malonate adduct of claim 1 wherein R is methyl.

6. A ketone-malonate adduct of claim 1 wherein R is n-butyl.

7. A ketone-ma-lonate adduct of claim 1 wherein R is n-hexyl.

8. A ketone-malonate adduct of claim 1 wherein R is n-dodecyl.

9. A process which comprises reacting decachlorooctahydro-1,3,4-metheno-2H-cyclobuta (cd) pentalen-2-one with a member of the group consisting of dialkyl and diaryl malonates, in mol ratio of about 0.5 to 2 mols decachlorooctahydro-1,3,4-metheno-2H-cyclobuta (cd) pentalen-2-one per mol of ma'lonate, at temperature ranging from room temperature to about 250 C.

10. The process of claim 9 in which the reaction is carried out in the presence of an inert organic solvent.

11. A process which comprises reacting approximately equimolar proportions of decachlorooctahydro-1,3,4- metheno-ZH-cyclobuta (cd) pentalen-Z-one and a member of the group consisting fo dialkyl and diaryl malonates at temperature of about to 200 C. in the presence of an inert organic solvent.

References Cited by the Examiner UNITED STATES PATENTS 2,516,404 7/1950 McBee et al 260-503 2,616,825 11/1952 Gilbert et a1 260-586 X 2,616,928 11/1952 Gilbert et al. 260-586 2,702,305 2/ 1955 Gilbert et al. 260-648 2,761,805 9/1956 Huidobro et al. 167-30 2,773,799 12/19156 Yuu Fan 167-30 2,864,680 12/1958 Degginger 71-23 2,882,320 4/1959 Cheney et al 260-586 2,883,320 4/ 1959 Nickell 167-30 2,898,375 8/1959 Guex et al. 260-586 3,055,948 9/1962 Hoch et a1. 260-611 LORRAINE A. WEINBERGER, Primary Examiner.

JULIAN S. LEVITT, Examiner.

G. A. MENTIS, R. K. JACKSON, Assistant Examiners. 

1. KETONE MALONATE ADDUCTS HAVING THE FOLLOWING FORMULA: 